This section is from the book "A Text-Book Of Pharmacology, Therapeutics And Materia Medica", by T. Lauder Brunton. Also available from Amazon: A text-book of pharmacology, therapeutics and materia medica.
The dried rhizome and rootlets of Valeriana officinalis. Collected in autumn from plants growing wild or cultivated in Britain.
Fig. 204. - Valerian, half the natural size.